Fish Passage Site 20501424

Coordinates (dec. deg.): 62.04443°, -150.05978°
Legal Description: S023N004W32
Region: South Central
Road Name: Parks Highway

Datum: NAD83
Quad Name / ITM: Talkeetna A-1
AWC Stream #: 247-41-10200-2226
Stream Name: Susitna River tributary

Elevation:

Site Comments: SUSITNA RIVER WATERSHED

Multiple surveys have been conducted at this site — click on the drop down
arrow to the right of the survey date below to choose a different report for this site.

Survey MSB11-PRK03

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: John Greuey, Abraham Gioffre

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Culvert sagging in middle
  3. Culvert gradient gray
  4. Mechanical damage or joints parting
  5. Beaver Activity
  6. Outfall height gray

Comments: Upst. Channel originates in a low marsh area and dwst flows through a marsh with several pools and channels. Inlet contained a homemade grate made from several vertical pieces of box tubing. Long profile starts upstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 89.21
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 88.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.15 4.0
Height(ft):3.9 3.98
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.26
Rustline Height(ft):1.45
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.13
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.36
Culvert Gradient: 1.30%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio red
  2. Culvert sagging in middle
  3. Culvert gradient gray
  4. Mechanical damage or joints parting
  5. Culvert is poorly aligned
  6. Outfall height gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicCobble
Subdominant:GravelOrganic
Stream Slope(deg.):0.11
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 18.0 10.00
Upstream ordinary high water 31.0 11.00
Upstream ordinary high water 52.0 13.40

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Thalweg (Profile point, glide through glide) 0.00 93.96
U/S Water Surface Elev 0.00 95.00
U/S Grade Ctrl (Thalweg) (Top of riffle on a cobble grade control) 104.00 94.52
U/S Water Surface Elev 104.00 94.92
U/S Water Surface Elev 124.00 94.86
U/S Grade Ctrl (Thalweg) (Bottom of riffle) 124.00 94.17
Inlet Culvert Invert (On pipe) 130.00 94.34
U/S Water Surface Elev (Water surface at inlet invert) 130.00 94.67
Inlet Culvert Top 130.00 98.25
Road Elev 175.00 102.08
Outlet Culvert Top 219.21 97.20
D/S Water Surface Elev (Water surface at outlet invert) 219.21 93.42
Outlet Invert 219.21 93.16
Max Pool Depth (Outlet pool elevation) 229.21 91.89
Outlet Pool Water Elev (Water surface of outlet pool) 229.21 93.29
D/S Thalweg (Profile point, top of riffle) 239.21 92.89
D/S Water Surface Elev 239.21 93.22
D/S Water Surface Elev (Water surface of pool downstream of outlet) 287.21 92.95
Max Pool Depth (Pool downstream of outlet) 287.21 90.89

Notes:

  1. River distance is measured continuously throughout the survey reach along the thalweg of the stream.
  2. Measured from each end of the crossing along the thalweg of the stream.

Fish Sampling Efforts

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov